Diazoxide Choline

Generic Name: diazoxide choline

Over-the-Counter (OTC)

Brand Names:

Vykat Xr

11 DESCRIPTION VYKAT XR contains diazoxide choline. Diazoxide choline is very slightly soluble to soluble in solvents dichloromethane, tetrahydrofuran, acetonitrile, and methanol and practically insoluble in solvents methyl tert -butyl ether. The pKa is 8.44 ± 0.01 Diazoxide choline is 7-Chloro-3-methyl-1λ6, 2,4-benzothiadiazin-2-ide 1,1-dioxide 2- hydroxyethyl(trimethyl)azanium. The empirical formula is C 8 H 6 ClN 2 O 2 S•C 5 H 14 NO and the molecular weight is 333.83 g/mole.

Overview

11 DESCRIPTION VYKAT XR contains diazoxide choline. Diazoxide choline is very slightly soluble to soluble in solvents dichloromethane, tetrahydrofuran, acetonitrile, and methanol and practically insoluble in solvents methyl tert -butyl ether. The pKa is 8.44 ± 0.01 Diazoxide choline is 7-Chloro-3-methyl-1λ6, 2,4-benzothiadiazin-2-ide 1,1-dioxide 2- hydroxyethyl(trimethyl)azanium. The empirical formula is C 8 H 6 ClN 2 O 2 S•C 5 H 14 NO and the molecular weight is 333.83 g/mole.

Uses

1 INDICATIONS AND USAGE VYKAT XR is indicated for the treatment of hyperphagia in adults and pediatric patients 4 years of age and older with Prader-Willi syndrome (PWS). VYKAT XR is indicated for the treatment of hyperphagia in adults and pediatric patients 4 years of age and older with Prader-Willi syndrome (PWS). ( 1 )

Dosage

2 DOSAGE AND ADMINISTRATION Prior to initiation, test fasting plasma glucose and HbA1c; optimize blood glucose in patients who have hyperglycemia. ( 2.1 ) Do not substitute with diazoxide oral suspension. ( 2.1 ) Administer orally once daily. ( 2.2 ) Recommended starting dosage and titration schedule is based on patient’s body weight. ( 2.2 ) Weight Starting Dosage Titration Dosage Titration Dosage Target Maintenance Dose Weeks 1 and 2 Weeks 3 and 4 Weeks 5 and 6 20 to <30 kg 25 mg 50 mg 75 mg 100 mg 30 to <40 kg 75 mg 150 mg 150 mg 150 mg 40 to <65 kg 75 mg 150 mg 225 mg 225 mg 65 to <100 kg 150 mg 225 mg 300 mg 375 mg 100 to <135 kg 150 mg 300 mg 375 mg 450 mg ≥135 kg 150 mg 300 mg 450 mg 525 mg The maximum recommended dosage is 5.8 mg/kg/day or 525 mg per day.

Side Effects

6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed in greater detail in other sections of the labeling: Hyperglycemia [see Warnings and Precautions (5.1) ] Risk of Fluid Overload [see Warnings and Precautions (5.2) ] Adverse Reactions from Clinical Studies of VYKAT XR in Patients with PWS Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In the clinical study development program for treatment of hyperphagia in patients aged 4 years and older with PWS, a total of 125 patients received at least 1 dose of VYKAT XR.

Interactions

7 DRUG INTERACTIONS Table 4 displays clinically significant drug interactions with VYKAT XR. Table 4: Clinically Significant Drug Interactions with VYKAT XR Strong CYP1A2 Inhibitors See www.fda.gov/CYPandTransporterInteractingDrugs for examples of strong CYP1A2 and CYP3A4 inhibitors, sensitive CYP1A2 substrates, and dual strong CYP3A4 / moderate 1A2 inducers. Prevention or Management Reduce the dosage of VYKAT XR when concomitantly used with strong inhibitors of CYP1A2 [see Dosage and Administration (2.4) ] . Mechanism and Clinical Effect(s) VYKAT XR is a CYP1A2 substrate. Concomitant use of VYKAT XR with strong CYP1A2 inhibitors increases exposure of diazoxide, which may increase the frequency and/or severity of adverse reactions from VYKAT XR [see Clinical Pharmacology (12.3) ] .

Warnings

5 WARNINGS AND PRECAUTIONS Hyperglycemia : Hyperglycemia, including diabetic ketoacidosis, has been reported. During treatment, monitor fasting glucose and HbA1c. Monitor fasting glucose more frequently during first few weeks of treatment in patients with risk factors for hyperglycemia. ( 2.3 , 5.1 ) Risk of Fluid Overload : Edema, including severe reactions associated with fluid overload, has been reported. Monitor for signs or symptoms of edema or fluid overload. ( 2.3 , 5.2 ) 5.1 Hyperglycemia VYKAT XR increases blood glucose, due primarily to an inhibition of insulin release from the pancreas. Hyperglycemia, including severe adverse reactions associated with diabetic ketoacidosis, occurred in VYKAT XR-treated patients during clinical trials [see Adverse Reactions (6) ] . 4 CONTRAINDICATIONS VYKAT XR is contraindicated in patients with known hypersensitivity to diazoxide, other components of VYKAT XR, or to thiazides. Erythema multiforme has been reported with VYKAT XR [see Adverse Reactions (6) ] . Known hypersensitivity to diazoxide, other components of VYKAT XR, or to thiazides. ( 4 )

Pregnancy

8.1 Pregnancy Risk Summary Available data from case reports with diazoxide use during pregnancy are insufficient to identify a drug-associated risk of major birth defects, miscarriage, or other adverse maternal outcomes. Adverse reactions, including hyperglycemia, alopecia, and hypertrichosis lanuginosa, have been reported in neonates exposed to diazoxide in utero prior to delivery (see Clinical Considerations ) .

Storage

16 HOW SUPPLIED/STORAGE AND HANDLING How Supplied VYKAT XR is supplied as follows: Strength Description Package Configuration NDC Number 25 mg diazoxide choline White, capsule-shaped tablets, debossed with "S-25" on one side 30-count bottles 83860-025-01 75 mg diazoxide choline White, round, standard convex tablets, debossed with "S-75" on one side 30-count bottles 83860-075-01 150 mg diazoxide ch...

Frequently Asked Questions

What is Diazoxide Choline used for?

1 INDICATIONS AND USAGE VYKAT XR is indicated for the treatment of hyperphagia in adults and pediatric patients 4 years of age and older with Prader-Willi syndrome (PWS). VYKAT XR is indicated for the treatment of hyperphagia in adults and pediatric patients 4 years of age and older with Prader-Willi syndrome (PWS). ( 1 )

What are the side effects of Diazoxide Choline?

6 ADVERSE REACTIONS The following clinically significant adverse reactions are discussed in greater detail in other sections of the labeling: Hyperglycemia [see Warnings and Precautions (5.1) ] Risk of Fluid Overload [see Warnings and Precautions (5.2) ] Adverse Reactions from Clinical Studies of VYKAT XR in Patients with PWS Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In the clinical study development program for treatment of hyperphagia in patients aged 4 years and older with PWS, a total of 125 patients received at least 1 dose of VYKAT XR.

Can I take Diazoxide Choline during pregnancy?

8.1 Pregnancy Risk Summary Available data from case reports with diazoxide use during pregnancy are insufficient to identify a drug-associated risk of major birth defects, miscarriage, or other adverse maternal outcomes. Adverse reactions, including hyperglycemia, alopecia, and hypertrichosis lanuginosa, have been reported in neonates exposed to diazoxide in utero prior to delivery (see Clinical Considerations ) .

What are the important warnings for Diazoxide Choline?

5 WARNINGS AND PRECAUTIONS Hyperglycemia : Hyperglycemia, including diabetic ketoacidosis, has been reported. During treatment, monitor fasting glucose and HbA1c. Monitor fasting glucose more frequently during first few weeks of treatment in patients with risk factors for hyperglycemia. ( 2.3 , 5.1 ) Risk of Fluid Overload : Edema, including severe reactions associated with fluid overload, has been reported. Monitor for signs or symptoms of edema or fluid overload. ( 2.3 , 5.2 ) 5.1 Hyperglycemia VYKAT XR increases blood glucose, due primarily to an inhibition of insulin release from the pancreas. Hyperglycemia, including severe adverse reactions associated with diabetic ketoacidosis, occurred in VYKAT XR-treated patients during clinical trials [see Adverse Reactions (6) ] . 4 CONTRAINDICATIONS VYKAT XR is contraindicated in patients with known hypersensitivity to diazoxide, other components of VYKAT XR, or to thiazides. Erythema multiforme has been reported with VYKAT XR [see Adverse Reactions (6) ] . Known hypersensitivity to diazoxide, other components of VYKAT XR, or to thiazides. ( 4 )

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.